METHOD FOR DETERMINING ORTHOGONAL COMPONENTS OF VELOCITY VECTORS AND METHOD FOR DETERMINING COORDINATES OF TWO SPACE VEHICLES USING EARTH STATIONS Russian patent published in 2021 - IPC G01S5/00 B64G3/00 G01C21/24 G01S3/46 G01S13/58 

FIELD: astronautics.

SUBSTANCE: inventions group relates to the field of astronautics, namely, to the technique of performing trajectory measurements and determining the coordinates and orthogonal components of the spacecraft velocity vectors, and can be used on ground and onboard spacecraft flight control systems to accurately determine the current parameters of spacecraft motion. The method for determining the velocity vectors of the main spacecraft and adjacent spacecraft includes: measuring in the ground radio technical station (GRTS) K values of the nominal frequencies and of the received radio signals of the n-th ЗС I_n after their retransmission by the main S₁and adjacent spacecraft S₂, respectively, calculation of coordinates of the main spacecraft х₁, у₁, z₁ and adjacent spacecraft х₂, у₂, z₂, calculation of orthogonal components of the velocity vector of the main spacecraft The method for determining the coordinates of the main х₁, у₁, z₁ and adjacent spacecraft х₂, у₂, z₂ includes: measuring in the GRTS K for each n-th ЗС I_n values of time delays Δt_n between the received radio signals after their retransmission by the main S₁ and adjacent spacecraft S₂, respectively, the calculation coordinates of the main spacecraft x₁, y₁, z₁.

EFFECT: increases accuracy of determining the coordinates and orthogonal components of the velocity vectors of two spacecraft.

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